I want to integrate credit card payment support in my app. So that user can enter his credit card no. and rest of the processing by credit card payment system. Any support api that can be used for integration?
I downloaded PayPalAndroidSDK from GitHub. Sample project from sdk starting from device, but when i try payment with credit card i get alert that "Payment Failed. The credit card information is invalid". I try to test some other credit cards but i get this alerts to.
I have a project with smart cards(mifare classic) with android os(NFC) but I have concerns about security.
My project is about a payment system but I need to support offline operations. Credit will be stored at card and after payment, new balance will be written to card. When device get online(maybe once a week), it will upload transactions and download new credit installs per card.